Term Definition Status
Diameter at breast height (DBH) Diameter at breast height, or DBH, is the standard for measuring trees. DBH refers to the tree diameter measured at 4.5 feet above the ground. ACCEPTED
Dielectric constant The relative permittivity of a material is its (absolute) permittivity expressed as a ratio relative to the permittivity of vacuum. Permittivity is a material property that affects the Coulomb force between two point charges in the material. Relative permittivity is the factor by which the electric field between the charges is decreased relative to vacuum. Likewise, relative permittivity is the ratio of the capacitance of a capacitor using that material as a dielectric, compared with a similar capacitor that has vacuum as its dielectric. Relative permittivity is also commonly known as dielectric constant, a term deprecated in engineering as well as in chemistry. ACCEPTED
Differential phase shift (ΦDP) Differential Phase Shift (ΦDP or PHI) is a measure of the difference in 2-way attenuation for the horizontal and vertical pulses in a pulse volume. As vertical and horizontal radar pulses pass through a particular target, the two pulses attenuate, or slow down, causing each pulse's phase to change. ΦDP shows the difference in phase shift between the horizontal pulse and the vertical pulse. This provides information about the shape and concentration of radar targets. ACCEPTED
Differential reflectivity The ratio of radar reflectivity measured by means of two signals that differ in one attribute, for example, polarization or wavelength. ACCEPTED
Digital data packet A digitally transmitted value via a digital interface, independent of the protocol used ACCEPTED
Direction e.g. alignment of a device. ACCEPTED
Discharge lysimeter measured discharge / seepage ACCEPTED
distance distance from sensor to cloud base PENDING
Distance Distance measured from a sensor to a target object such as the surface of a water body or snow surface. ACCEPTED
Doppler spectrum width, horizontal The Doppler spread or Doppler spectrum width is usually defined as the standard deviation of the Doppler velocity about its mean value, regarding the velocity as a continuously distributed random variable with a probability density function equal to the normalized Doppler spectrum. Direction of polarization here is horizontal. ACCEPTED
Doppler spectrum width, vertical The Doppler spread or Doppler spectrum width is usually defined as the standard deviation of the Doppler velocity about its mean value, regarding the velocity as a continuously distributed random variable with a probability density function equal to the normalized Doppler spectrum. Direction of polarization here is vertical. ACCEPTED
Doppler velocity The radial component of the velocity vector of a scattering object as observed by a remote sensor, such as a Doppler radar or Doppler lidar. ACCEPTED
Drop-size distribution The frequency distribution of drop sizes (diameters, volumes) that is characteristic of a given cloud or of a given fall of rain. ACCEPTED
Electrical conductivity - ACCEPTED
Electrical conductivity - ACCEPTED
Electrical conductivity - ACCEPTED
Electrical current Measured electrical current. ACCEPTED
Electrical current device Operating parameter of a device. Current consumption of a device. ACCEPTED
Electrical energy - ACCEPTED
Electrical power - ACCEPTED
Electrical voltage Measured electrical voltage. ACCEPTED
Elevation A measure (or condition) of height, especially with respect to the height of a point on the earth's surface above a reference plane (usually mean sea level), as "station elevation." ACCEPTED
Energy flux - ACCEPTED
Erosion rate In earth science, erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location (not to be confused with weathering which involves no movement). ACCEPTED
Evaporation - ACCEPTED
Evapotranspiration Evapotranspiration is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere. ACCEPTED
Evapotranspiration, potential The amount of water that could be evaporated and transpired if there was sufficient water available. ACCEPTED
Filling level vessel non real time Filling level measured in non real-time. ACCEPTED
Filling level vessel real time Filling level measured in real-time. ACCEPTED
Flow rate - ACCEPTED
Flux CO2 - ACCEPTED
Flux CO2 - ACCEPTED
Frame count, data The frame counter is a counter that is incremented by the value 1 with each transmission. PENDING
Frequency of Rotation Number of rotations within a time period ACCEPTED
Friction velocity - ACCEPTED
Gage height Water level with regard to an arbitrary gage datum (also see Water depth for comparison) ACCEPTED
Geologic unit Geologic units consists primarily of identifying physiographic units and determining the rock lithology or coarse stratigraphy of exposed units. ACCEPTED
Glacier mass anomaly - PENDING
Glacier mass anomaly uncertainty - ACCEPTED
Global radiation, in Total short-wave direct and diffuse downward radation ACCEPTED
Global radiation, out Total short-wave direct and diffuse upward radiation ACCEPTED
GPS position, height Please note or choose reference height (ellipsoid or geoid). ACCEPTED
GPS position, latitude If ellipsoid differs from WGS84 please note the reference ellipsoid. ACCEPTED
GPS position, longitude If ellipsoid differs from WGS84 please note the reference ellipsoid. ACCEPTED
Grain size Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. ACCEPTED
Ground heat flux - ACCEPTED
Groundwater level over sensor - ACCEPTED
Groundwater table - ACCEPTED
Groundwater temperature - ACCEPTED
Heat flux calibration factor - ACCEPTED
Heat flux heating - ACCEPTED
Heat index The combination effect of heat and humidity on the temperature felt by people. ACCEPTED
Height Height is measure of vertical distance, either vertical extent or vertical position ACCEPTED
Height, above sea floor Vertical distance from the sea floor to a point. ACCEPTED
HK-Time "Housekeeping"-time (date and time) of an Ecotech data logger ACCEPTED
Humification index Humification index. Hummification is the processes by which organic matter decomposes to form humus. In humus the initial structures or shapes can no longer be recognized. See also humus. ACCEPTED
Hydraulic conductivity Hydraulic conductivity, symbolically represented as K, is a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures. It depends on the intrinsic permeability of the material, the degree of saturation, and on the density and viscosity of the fluid. ACCEPTED
Hydraulic conductivity Hydraulic conductivity, symbolically represented as K, is a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures. It depends on the intrinsic permeability of the material, the degree of saturation, and on the density and viscosity of the fluid. ACCEPTED
Hydraulic conductivity Hydraulic conductivity, symbolically represented as K, is a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures. It depends on the intrinsic permeability of the material, the degree of saturation, and on the density and viscosity of the fluid. ACCEPTED
Hydrogen-2, stable isotope ratio delta Difference in the 2H:1H ratio between the sample and standard ACCEPTED
Hydrogen-2, stable isotope ratio delta Difference in the 2H:1H ratio between the sample and standard ACCEPTED
Ice mass change - ACCEPTED
Ice mass change, uncertainty - ACCEPTED
Ice nucleating particle number concentrationtration Number per unit volume of particles able to serve as condensation nuclei for ice phase cloud particles ACCEPTED
Illuminance - ACCEPTED
Indicator Binary status to indicate the status of an instrument or other piece of equipment. ACCEPTED
Instrument status code Code value recorded by instrument indicating some information regarding the status of the instrument ACCEPTED
Irradiance Incident light from the hemisphere per wavelength. ACCEPTED
Land classification Geographical land classification- genetically homogeneous territorial unit within natural boundaries with a certain structure and a certain character of interrelationships of considered components ACCEPTED
Latent heat flux Latent Heat Flux ACCEPTED
Leaf area index (LAI) Leaf area index (LAI) is a dimensionless quantity that characterizes plant canopies. It is defined as the one-sided green leaf area per unit ground surface area (LAI = leaf area / ground area, m2 / m2) in broadleaf canopies. ACCEPTED
Leaf wetness The effect of moisture settling on the surface of a leaf as a result of either condensation or rainfall. ACCEPTED
Length Length is a measure of distance. ACCEPTED
Lightning Average Distance The average distance of lightning strikes to the weather station. PENDING
Lightning Strike Count The count of lightning strikes around a weather station. PENDING
Limit value Typically binary value if a fixed limit value is reached, e.g. max filling level or any other limit or threshold. ACCEPTED
Liquid water path A measure of the weight of the liquid water droplets in the atmosphere above a unit surface area on the earth, given in units of kg m-2, for example. ACCEPTED
Litter, plant Litterfall, plant litter, leaf litter, tree litter, soil litter, or duff, is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. ACCEPTED
Load, suspended The suspended load of a flow of fluid, such as a river, is the portion of its sediment uplifted by the fluid's flow in the process of sediment transportation. It is kept suspended by the fluid's turbulence. The suspended load generally consists of smaller particles, like clay, silt, and fine sands. ACCEPTED
Low battery count A counter of the number of times the battery voltage dropped below a minimum threshold ACCEPTED
LSI Langelier Saturation Index is an indicator of the degree of saturation of water with respect to calcium carbonate ACCEPTED
LSI Langelier Saturation Index is an indicator of the degree of saturation of water with respect to calcium carbonate ACCEPTED
Mass concentration The (mass) concentration ρi is defined as the mass of a constituent mi divided by the volume of the mixture V. In this case it means the mass concentration of dsDNA molecules in a solution measured in nanogram dsDNA per microliter sample volume. ACCEPTED
Matric Potential When water is in contact with solid particles (e.g., clay or sand particles within soil), adhesive intermolecular forces between the water and the solid can be large and important PENDING
Memory capacity Specified in decimal interpretation: 1 kB = 1000 Byte, 1 MB = 1.000.000 Byte, 1 GB = 1.000.000.000 Byte ACCEPTED
Memory usage Specified in decimal interpretation: 1 kB = 1000 Byte 1 MB = 1.000.000 Byte 1 GB = 1.000.000.000 Byte ACCEPTED
Momentum flux - ACCEPTED
NDVI Normalized difference vegetation index ACCEPTED
Neutron counts Number of detected neutrons (moderated / unmoderated) per time interval. ACCEPTED
Nitrogen dioxide - REJECTED
Nitrogen minerally bonded Minerallly bonded Nitrogen. ACCEPTED
Nitrogen organically bonded Organically bonded Nitrogen. ACCEPTED
Nitrogen total Total Nitrogen ACCEPTED
No vegetation coverage Areal coverage of no vegetation ACCEPTED
number_concentration_of_aerosol_particles_in_air "Number concentration" means the number of particles or other specified objects per unit volume. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. PENDING
Number of CPU cores - ACCEPTED
Number of sessions - ACCEPTED
Numbers of samples Consecutive number of all samples ACCEPTED
Organic carbon, dissolved Dissolved organic Carbon (DOC). ACCEPTED
Organic carbon, total Total organic Carbon (TOC). ACCEPTED